Wisconsin Sales Tax Nexus: Economic Nexus Threshold (2026)
Wisconsin's economic nexus threshold for remote sellers is $100,000 in sales, measured over the previous or current calendar year. Marketplace sales count toward Wisconsin's threshold. Inventory or another physical presence in Wisconsin generally creates nexus regardless of sales. The state rate is 5%, plus local taxes.
Wisconsin sales tax nexus: key facts
| Sales threshold | $100,000 |
|---|---|
| Transaction threshold | None |
| Test | Sales only |
| What counts | Gross sales into Wisconsin exceeding $100,000, including taxable and nontaxable sales, sales made by the remote seller on behalf of others, and sales made by another seller on its behalf |
| Measurement period | Previous or current calendar year |
| Marketplace sales count toward your threshold? | Yes, counted |
| Marketplace facilitator law | Yes: marketplaces generally collect on the sales they facilitate |
| State rate | 5% |
| Local sales taxes | Yes, in addition to the state rate |
| Current threshold effective | February 20, 2021 |
| Recent change | No threshold change found; see the note below |
| Registration | Official registration page |
| Last researched | September 23, 2026 |
The state rate is the statewide state-level rate only. Local and district rates are extra where they apply.
Recent changes we checked
No change to the threshold in 2024-2026. Local: the City of Milwaukee 2% city sales tax took effect Jan 1, 2024, and Milwaukee County's county tax rose from 0.5% (per WI DOR rates FAQ).
Quick check: do you have nexus in Wisconsin?
Enter your Wisconsin sales to see whether you may have nexus.
Selling into several states? Use the full Sales Tax Nexus Checker. Your figures stay in your browser.
What to do after crossing the Wisconsin threshold
When it starts:
- If the threshold is exceeded in the current year, collection starts with the next sale, and the seller must also collect for all of the following calendar year (DOR Examples 4 and 9).
- Confirm the numbers. Check your Wisconsin sales against the measure and period in the key facts above.
- Register before you collect. Use Wisconsin's official registration page. Collecting a state's tax without a registration is generally not allowed.
- Collect and file. Charge Wisconsin sales tax (plus any local taxes that apply at the delivery address) on taxable sales from the start date, and file returns on the schedule the state assigns. Marketplaces generally collect on the sales they facilitate, so you usually collect on your direct sales.
- Look back. If you crossed the threshold in an earlier period and did not register, get advice on those periods. Many states have voluntary disclosure programs that may limit penalties.
Physical presence and inventory in Wisconsin
The small seller exception does not apply to sellers with physical presence in WI (including inventory in WI via FBA/3PL) or to permitted wine direct shippers.
Marketplace sellers in Wisconsin
Do marketplace sales count toward your own threshold? Yes, counted.
WI DOR: when deciding whether a remote marketplace seller qualifies for the small seller exception, 'the annual sales amount includes sales into Wisconsin made by the marketplace seller, as well as sales made on its behalf by a marketplace provider.' Since Jan 1, 2020 (2019 Wis. Act 10), marketplace providers collect on facilitated sales, and the seller collects only on non-marketplace sales.
Other things to know about Wisconsin
- Full SSUTA member. Register through Wisconsin's online registration or the Streamlined Sales Tax Registration System.
- 2021 Wis. Act 1 (eff. Feb 20, 2021) removed the 200-transaction test and switched the measurement from the seller's federal taxable year to the calendar year.
- Local taxes: 0.5% county tax in 70 counties, a higher Milwaukee County rate, and the 2% City of Milwaukee tax (the only city-level sales tax). Registered retailers must collect county/city tax based on where the sale is sourced.
Frequently asked questions
What is the Wisconsin economic nexus threshold?
$100,000 in sales, measured over the previous or current calendar year. What counts: Gross sales into Wisconsin exceeding $100,000, including taxable and nontaxable sales, sales made by the remote seller on behalf of others, and sales made by another seller on its behalf.
Do marketplace sales count toward the Wisconsin threshold?
Yes, counted. WI DOR: when deciding whether a remote marketplace seller qualifies for the small seller exception, 'the annual sales amount includes sales into Wisconsin made by the marketplace seller, as well as sales made on its behalf by a marketplace provider.' Since Jan 1, 2020 (2019 Wis. Act 10), marketplace providers collect on facilitated sales, and the seller collects only on non-marketplace sales.
Does FBA or 3PL inventory in Wisconsin create nexus?
The small seller exception does not apply to sellers with physical presence in WI (including inventory in WI via FBA/3PL) or to permitted wine direct shippers.
When do I have to start collecting Wisconsin sales tax?
If the threshold is exceeded in the current year, collection starts with the next sale, and the seller must also collect for all of the following calendar year (DOR Examples 4 and 9).
Registration: official registration page.
Does Wisconsin have a transaction-count test?
No. Wisconsin uses only the dollar threshold.
Crossed the Wisconsin threshold, or not sure? A professional can confirm it and handle registration.
Nexus Study + Registration + Cleanup
Fixed price, quoted before any work starts
- State-by-state review of your sales and inventory locations
- Registration in states where you have nexus
- Plan for any past-due periods (including voluntary disclosure where appropriate)
- Ongoing sales tax filing option
Disclaimer: This page provides general information for educational purposes and is not tax, legal or accounting advice. State rules change, and whether you have nexus can depend on facts not covered here. Confirm with Wisconsin's official guidance or a qualified professional before acting. RAHA Financials is not affiliated with any state tax agency.
Sources
- Primary official source: https://www.revenue.wi.gov/Pages/FAQS/ise-remote-sellers.aspx
- revenue.wi.gov: https://www.revenue.wi.gov/Pages/TaxPro/2018/Registration-and-Collection-Dates-for-Remote-Sellers.aspx
- revenue.wi.gov: https://www.revenue.wi.gov/Pages/FAQS/pcs-taxrates.aspx
- revenue.wi.gov: https://www.revenue.wi.gov/Pages/Businesses/marketplace-providers-sellers.aspx
